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high viscosity asphalt 1

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Synthesis and characterization of macromolecular surface modifier PP--PEG for polypropylene

CHEN Hanjia, SHI Xuhua, ZHU Yafei, ZHANG Yi, XU Jiarui

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 102-108 doi: 10.1007/s11705-008-0018-z

Abstract: A novel macromolecular surface modifier, polypropylene-grafted-poly(ethylene glycol) copolymer (PP--PEGdiffuse preferably onto the surface of the blends and be suitable as an effectual macromolecular surface modifier

Keywords： polypropylene     crystallization capacity     attenuated     hydrophilicity     reflectance    

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Effect of different high viscosity modifiers on rheological properties of high viscosity asphalt

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1390-1399 doi: 10.1007/s11709-021-0775-z

Abstract: High viscosity asphalt (HVA) has been a great success as a drainage pavement material. However, the larger porosity of drainage asphalt mixtures weakens the cohesion and adhesion and leads to premature rutting, water damage, spalling and cracking. The purpose of this study was to investigate the rheological properties of HVA prepared using different high viscosity modifiers through conventional tests, Brookfield viscosity tests, dynamic shear rheometer tests and bending beam rheometer tests. The conventional performance results demonstrated SBS + rubber asphalt (SRA-1/2) exhibited excellent elastic recovery and low-temperature flexibility. The 60°C dynamic viscosity results indicated TPS + rubber asphalt (TRA) had the excellent adhesion. The rotational viscosity results and rheological results indicated that SRA-2 not only exhibited excellent temperature stability and workability, as well as excellent resistance to deformation and rutting resistance, but also exhibited excellent low-temperature cracking resistance and relaxation performance. Based on rheological results, the PG classification of HVA was 16% rubber + asphalt for PG76-22, 20% rubber + asphalt for PG88-22, TRA and SRA-1/2 for PG88-28. From comprehensive evaluation of the viscosity, temperature stability and sensitivity, as well as high/low temperature performance of HVA, SRA-2 was found to be more suited to the requirements of drainage asphalt pavement materials.

Keywords： high viscosity asphalt     rheological properties     rubber     modifier     viscosity    

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Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild conditions

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 772-783 doi: 10.1007/s11705-022-2280-x

Abstract: was synthesized via steam-assisted crystallization by introducing acetylcholine as a crystal growth modifieraccelerated by electrostatic interactions between the connected hydroxyl groups of the acetylcholine modifier

Keywords： size-controlled TS-1     crystal modifier     steam-assisted crystallization     epoxidation    

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An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Engineering 2017, Volume 3, Issue 5,   Pages 641-647 doi: 10.1016/J.ENG.2017.04.007

Abstract: A corresponding control strategy, which is composed of a modal characteristic modifier (MCM) and an intelligent

Keywords： Ball-screw feed drives     Varying high-order dynamics     Non-collocated control     Modal characteristic modifier    

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Title Author Date Type Operation

Synthesis and characterization of macromolecular surface modifier PP--PEG for polypropylene

CHEN Hanjia, SHI Xuhua, ZHU Yafei, ZHANG Yi, XU Jiarui

Journal Article

Effect of different high viscosity modifiers on rheological properties of high viscosity asphalt

Journal Article

Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild conditions

Journal Article

An Intelligent Non-Collocated Control Strategy for Ball-Screw Feed Drives with Dynamic Variations

Hui Liu, Jun Zhang, Wanhua Zhao

Journal Article